Door-check.



No. 7||,598. Patented Oct. 2|, I902. H. G. VUIGHT & H. K. JONES. DOOR CHECK (Application filed Feb. 28, 1902.)

Eff/755555 EVEN/ans.

UNITED STATES PATENT OFFICE.

HENRY G. VOIGHT, OF NEW BRITAIN, AND HORACE K. JONES, OF HART- FORD, CONNECTICUT, ASSIGNORS TO THE RUSSELL (Kt ERWIN MANUFAC- TUBING COMPANY, OF NEW BRITAIN, CONNECTICUT.

DOOR-CHECK.

SPECIFICATION forming part Of Letters Patent No. '7 1 1,598, dated October 21, 1902.

A Application filed February 28, 1902. Serial No. 96,087. (No model.)

10 all whom it may concern.-

Be it known that we, HENRY G.VOIGHT, of New Britain, and HORACE K. JoNEs, of Hartford, in the county of Hartford and State of Connecticut, citizens ,of the United States,

have invented certain new and useful Improvements in Door-Checks, of which the fol-- lowing is a specification.

Our invention relates to improvements in lo door-checks; and the objects of our invention are Simplicity and econoinyin construction and convenience and efficiency in operation.

In the accompanying drawings, Figure l is a plan view of ourdoor-check. Fig. 2 is a side elevation of the upper part of our door-check with a portion thereof in vertical section. Fig. 3 is an enlarged sectional view of a portion thereof on the line so a; of Fig. 1. Fig. 4 is a detached plan view of the screw-eye of the adjustable link or lever for being secured to the outer end of the lever-arm. Fig. 5 is a sectional side elevation of the same. Fig. 6 is a plan view of the other screw-eye and part of the turnbuckle of the adjusting-link in a modified form; and Fig. 7 isa sectional View of the same on the line y, Fig. 6.

A designates the case, which may be of any ordinary form and having projecting from its upper end the shaft 8, to which the leverarm 9 is secured in any proper manner. As shown, there is a sleeve 10 surrounding this shaft, to which sleeve the inner end of the spring (not shown) is secured, the saidarm being connected with the said sleeve by means of the pawl 11, which may be changed for different-handed doors. As illustrated in Fig. l, the hinge of the door is on the left-hand side of the check. The outer end of the lever-arm 9 is connected with the casing by means of the adjustable linkB and its bracket 12. This link consists of two screw-eyes 13 and 14, a turnbuckle 15, and a self-acting fa'stoning device that permits theturnbuckle to be readily turned while connected to the door and to fasten the turnbuckle against accidental displacement. As in other turnbuckles, one end is provided with a left-hand thread and the other with a right-hand thread, and the body of the screw-eyes are correspondingly threaded. In Figs. 1 to 5, inclusive, the left-hand screw-eye 13 is connected with the lever-arm 9, while the right-hand screw-eye 14; is connected to the bracket 12 by a screw or pin 16. The body of the screweye 14 is provided with a longitudinal groove 17, preferably having slanting sides, and in the hub of the turnbuckle is a sliding pin 18, with a rounded end Ihat'sets into the said groove, as shown in Fig. 3. This sliding pin is forced inwardly into the said groove by means of the spring 19, Fig. 3. After the parts have been connected to the door if the connections, and thus readily bring the link to the proper length. The spring-pin readily yields upon the application of a little force and moves endwise out of the groove to permit the turnbuckle to revolve and snaps in again to hold the turnbuckle against accidental displacement as the groove next comes opposite the end of the said pin. The buckle should be stopped inits revolution with the pin in the groove; but whatever position the turnbuckle may be left in it will never revolve more than one revolution before it will be fastened in'place by the self-fastening spring-pin.

In Figs. 6 and 7 we have shown the selffastening device in a modified form and acting upon the screw-eye 13, having the lefthand thread. It is immaterial upon which one of the screw-eyes the self-fastening device is placed. Instead of a groove the body of the screw-eye 13 is slabbed off on one side to make a longitudinal and flat spring-seat 17. On the turnbuckle 15 is a spring 19, with a bent end 20, that bears upon the spring- 0 seat 17. The operation is the same as that before described for the spring-pin. The next part of our improvement relate to the ball-and-socket connection of the leverarm 9 withthe link B. We perforate the g5 outer end of the lever-arm and secure within the said perforation the shouldered pin 21, having at its projecting upper end the ballshaped knob 22. The hub or head of the screw-eye 13 is first made with a bore of a di- 10o ameter at its upper and larger part large enough to receive the ball-shaped head 22 of the pin 21, while it is contracted at its lower part to a size that the said ball-shaped head cannot pass through. The upper side of the eye is provided with a thin annular portion 23, surrou nding the opening therein, as shown in Figs. 4 and 5. To secure the parts together, the body of the pin 21 is passed through the openingin the head of the screw-eye 13 and then into the hole in the end of the lever-arm 9, where it is rigidly secured by riveting the lower end. The parts are all placed in a suitable die or holder, and the annular portion 23 is turned in to close it upon the ballshaped end 22, changing the hub of the screweye 13 from the form shown in Figs. 4 and 5 to that shown in Fig. 2. In use the link B swings on the ball-shaped head 22 as the pivot of the two ends of the said link and lever-arm when the door is opened and closed, while at the same time the headed 'pin and hub of the screw-eye form a ball-and-socket joint to accommodate the link B to a position out of parallel to the lever-arm 9, such as it may have by placing the bracket 12 higher or lower or by reason of any clifierent elevations that the check may have on the door.

It is apparent that some changes from the specific construction herein disclosed may be made, and therefore we do not wish to be understood as limiting ourselves to the precise form of construction shown and described, but desire the liberty to make such changes in working our invention as may fairly come within the spirit and scope of the same.

We claim as our invention- 1. The combination of a door-check case,

with the leverarm mounted thereon, the screw-eyes and turnbuckle forming the adjustable link pivoted by one end to the said lever-arm and by their other end to a bracket, and a self-fastening device for securing the turnbuckle against accidental displacement, but permitting it to turn readily when the parts are connected, substantially as described.

2. In a door-check, the lever-arm 9 having a bore for a pin through its outer end, the pin 21 having the ball-shaped knob 22 at its upper end with a shoulder just below the base of the said knob, and the link having the upper and largest part of the bore of its hub at one end first made large enough to receive the said ball-shaped knob by passing the pin longitudinally therein, the said bore of the hub of the link being contracted at its lower part to a size that the said ball-shaped head cannot pass through, the upper face of the said hub having a thin annular portion 23 surrounding the bore therein, the said pin being inserted longitudinally into the bores of the link and crank-arm with the shoulder of the said pin resting on the top of the crankarm and its lower end riveted in place, the annular portion that surrounds the bore at the upper side of the crank-arm being contracted and turned over the upper end of the ball-shaped knob to prevent the confronting faces of the link and arm from coming in contact with each other, substantially as described.

HENRY G. VOIGHT. HORACE K. JONES. Witnesses:

M. S. VVIARD, W. E. WIGHTMAN. 

